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arch/tricore: add NMI trap handler (weak)

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Add support for handling non-maskable interrupts (NMI) on TriCore
platforms. The NMI trap handler `tricore_nmitrap()` is provided as a weak
function that prints diagnostic information and invokes a panic with
register context. The main trap dispatcher will invoke `tricore_nmitrap`
when an NMI trap class is detected.

This change improves diagnostics when watchdog-induced NMIs or other
non-maskable exceptions occur during runtime.

Signed-off-by: yukangzhi <yukangzhi@xiaomi.com>
This commit is contained in:
yukangzhi
2025-02-05 11:15:21 +08:00
committed by Xiang Xiao
parent 9d5e83b411
commit b7fd8a268d
1 changed files with 18 additions and 0 deletions
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arch/tricore/src/common/tricore_trapcall.c
+18
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@@ -65,6 +65,17 @@ static void tricore_trapinfo(volatile void *trap)
* Public Functions
****************************************************************************/
int weak_function tricore_nmitrap(uint32_t tid, void *context, void *arg)
{
_alert("PANIC!!! NMI Trap:\n");
_alert("\tClass %d TID: %d regs: %p\n",
IfxCpu_Trap_Class_nonMaskableInterrupt, tid, context);
up_irq_save();
PANIC_WITH_REGS("panic", context);
return OK;
}
int tricore_mmutrap(uint32_t tid, void *context, void *arg)
{
_alert("PANIC!!! MMU Trap:\n");
@@ -322,6 +333,13 @@ void tricore_trapcall(volatile void *trap)
up_set_interrupt_context(true);
if (tclass == IfxCpu_Trap_Class_nonMaskableInterrupt)
{
tricore_nmitrap(tid, regs, NULL);
up_set_interrupt_context(false);
return;
}
if (tclass == IfxCpu_Trap_Class_memoryManagement)
{
tricore_mmutrap(tid, regs, NULL);